Hi Pete, we would advise against that application. GREAT STUFF™ is water resistant not water proof and it has not been rated to support weight.
While GREAT STUFF(TM) has some known compatibility issues with polyethylene plastics, it is mainly restricted to a question of adhesion. If the GREAT STUFF(TM) foam is fully cured, contact between the two materials should not have any other adverse effects.
The contents of GREAT STUFF™ should be as close to room temperature as possible when dispensed. When using GREAT STUFF™ Window & Door, apply when temperatures are between 40° -100°F (4°- 38°C.). When applying the foam in cool temperatures, misting the foam with water from a spray bottle may help the foam to expand and cure better.
Based on the information you have provided, it is difficult to determine whether GREAT STUFF(TM) Window & Door will work in this application. Please call us at 1-866-583-2583 and select prompt 8 to discuss your application and receive our best recommendation.
Hi Jackie, the theoretical yields on one-component foams is measured in lineal feet of a 3/8" - 1/2" diameter bead. The 16 oz. Window & Door yields 360-425 lineal feet (3/8" diameter). GREAT STUFF™ products are not insulation and are instead insulating foam sealants in that they insulate by sealing, preventing the free flow of air (and are also water resistant). GREAT STUFF™ is not to be used for filling closed cavities or voids such as behind walls and under tub surrounds; this improper use of the product could result in the accumulation of flammable vapors and/or uncured material. Failure to follow the warnings and instructions provided with the product, and/or all applicable rules and regulations, can result in injury or death.
Hi Rh, GREAT STUFF™ Insulating Foam Sealant products will chemically bond to just about all surfaces in a matter of minutes. Once cured, it cannot be removed with solvents and the only option is mechanical removal. On hard, smooth, or polished surfaces this may be accomplished very carefully with a single-edged razor blade. If this does not work, or if the foam is on a soft or porous surface, the only option is to attempt to remove it using a non-abrasive cleanser. The more effort spent scrubbing, the more likely it is to see positive results. If the non-abrasive cleanser does not work, consider replacement or refinishing. A more aggressive approach such as steel wool or sandpaper will damage the underlying surface. Only UV light will break the foam down and this takes months. Heat has no effect on the foam. It may soften, but it will not melt and the resulting fumes may be harmful.
I have in fact used Great Stuff to fill rust holes. You want to be sure the area is dry and all loose rust removed before filling the area. Once it has cured completely you can trim any excess with a sharp knife. Just be aware, if you fill a hole that has standing water or is still damp that water will be trapped within. Whenever I've used it to fill holes in sheet metal I make sure all the loose rust is removed and then use a shop vac to clean any debris leftover inside the cavity. Keep in mind these cavity's often have dirt (mud) accumulated. If I detect moisture within the cavity I use a blow dryer to dry it first and then vacuum again before filling the whole. Avoid getting this on moving parts such as door hinges and latches. Also, latex gloves are highly recommended. When filling larger holes you may want to apply Great Stuff in layers rather than all at once as thinner layers cure quicker and more thoroughly.
Blue can shown doesn't keep paint well since by it's nature is considerably flexible. The red can cures to a tighter bond and is more accepting of paint. Keep in mind though, in many applications you'll want to trim the excess after it's cured which leaves a rough surface since it forms air pockets within the membrane. Hence a trimmed painted surface will have a rough finish. I have never used stain over Great Stuff and would suspect the chemical make up of some stains may actually damage the cured surface.
Since one of the active ingredients in this product is isocyanite it is toxic during the curing process (about 24 hours). Once cured it's toxicity falls off greatly since the active liquid ingredients have evaporated. That said, if you are concerned with children or pets attempting to eat the cured product I would avoid areas that can be easily accessed by them. Also, after Great Stuff has cured, you can cut away any excess that protrudes where it could easily be picked at.